The cycle is limited to have the duration of 25 (for [[Ratio of breath cycle|ratio of breath cycle]]) * 80 (for [[Seconds per unit|"sec per unit]] index) = 2000 seconds. For [[Guru version]] it is 50 * 80 = 4000 seconds.
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A single phase is limited to have the duration of 25 (for [[Ratio of breath cycle|ratio of breath cycle]]) * 80 (for [[Seconds per unit|"sec per unit]] index) = 2000 seconds. For [[Guru version]] it is 50 * 80 = 4000 seconds.